diff --git a/regress/file_comment_encmismatch.test b/regress/file_comment_encmismatch.test
index fb026eb3e..a5c6c221f 100644
--- a/regress/file_comment_encmismatch.test
+++ b/regress/file_comment_encmismatch.test
@@ -1,4 +1,7 @@
 # set file comment to UTF-8 for CP437 encoded filename (adds InfoZIP extra field)
 return 0
-arguments testfile.zip   set_file_comment 0 ÄÖÜßäöü
+arguments -i testfile.zip dummy
+stdin
+set_file_comment 0 ÄÖÜßäöü
+end-of-inline-data
 file testfile.zip test-cp437.zip test-cp437-comment-utf-8.zip
diff --git a/regress/name_locate-utf8.test b/regress/name_locate-utf8.test
index ae205206f..bbd638416 100644
--- a/regress/name_locate-utf8.test
+++ b/regress/name_locate-utf8.test
@@ -1,5 +1,8 @@
 description tests for various encoding flags for zip_name_locate
-arguments test.zip  name_locate "æÆôöòûùÿÖÜ¢£¥₧ƒá" 0  name_locate "æÆôöòûùÿÖÜ¢£¥₧ƒá" 4  name_locate "æÆôöòûùÿÖÜ¢£¥₧ƒá" 8  name_locate "æÆôöòûùÿÖÜ¢£¥₧ƒá" r  name_locate "æÆôöòûùÿÖÜ¢£¥₧ƒá" s
+arguments -i test.zip dummy
+stdin
+name_locate æÆôöòûùÿÖÜ¢£¥₧ƒá 0  name_locate æÆôöòûùÿÖÜ¢£¥₧ƒá 4  name_locate æÆôöòûùÿÖÜ¢£¥₧ƒá 8  name_locate æÆôöòûùÿÖÜ¢£¥₧ƒá r  name_locate æÆôöòûùÿÖÜ¢£¥₧ƒá s
+end-of-inline-data
 return 0
 file test.zip test-cp437.zip
 stdout
diff --git a/regress/rename_utf8.test b/regress/rename_utf8.test
index 452661ca7..d4b13a56b 100644
--- a/regress/rename_utf8.test
+++ b/regress/rename_utf8.test
@@ -1,4 +1,7 @@
 # rename file to UTF-8 name in zip archive
 return 0
-arguments testfile rename 0 ÄÖÜßäöü
+arguments -i testfile dummy
+stdin
+rename 0 ÄÖÜßäöü
+end-of-inline-data
 file testfile testfile.zip testfile-UTF8.zip
diff --git a/regress/rename_utf8_encmismatch.test b/regress/rename_utf8_encmismatch.test
index cf8b21948..e20dbc926 100644
--- a/regress/rename_utf8_encmismatch.test
+++ b/regress/rename_utf8_encmismatch.test
@@ -1,4 +1,7 @@
 # rename file to UTF-8 name in zip archive with CP437 comment (sets InfoZIP UTF-8 Name Extension)
 return 0
-arguments testfile rename 0 ÄÖÜßäöü
+arguments -i testfile dummy
+stdin
+rename 0 ÄÖÜßäöü
+end-of-inline-data
 file testfile test-cp437-fc.zip test-cp437-fc-utf-8-filename.zip
diff --git a/regress/ziptool_regress.c b/regress/ziptool_regress.c
index a653de3a0..562897b11 100644
--- a/regress/ziptool_regress.c
+++ b/regress/ziptool_regress.c
@@ -12,6 +12,7 @@ source_type_t source_type = SOURCE_TYPE_NONE;
 zip_uint64_t fragment_size = 0;
 zip_file_t *z_files[16];
 unsigned int z_files_count;
+int commands_from_stdin = 0;
 
 static int add_nul(char *argv[]);
 static int cancel(char *argv[]);
@@ -24,14 +25,17 @@ static int unchange_one(char *argv[]);
 static int unchange_all(char *argv[]);
 static int zin_close(char *argv[]);
 
-#define OPTIONS_REGRESS "F:Hmx"
+#define OPTIONS_REGRESS "F:Himx"
 
-#define USAGE_REGRESS " [-Hmx] [-F fragment-size]"
+#define USAGE_REGRESS " [-Himx] [-F fragment-size]"
 
 #define GETOPT_REGRESS                              \
     case 'H':                                       \
         source_type = SOURCE_TYPE_HOLE;             \
         break;                                      \
+    case 'i':                                       \
+        commands_from_stdin = 1;                    \
+        break;                                      \
     case 'm':                                       \
         source_type = SOURCE_TYPE_IN_MEMORY;        \
         break;                                      \
@@ -69,12 +73,43 @@ static int zin_close(char *argv[]);
 
 /* clang-format on */
 
+#define MAX_STDIN_ARGC  128
+#define MAX_STDIN_LENGTH    8192
+
+char* stdin_argv[MAX_STDIN_ARGC];
+static char stdin_line[MAX_STDIN_LENGTH];
+
+int get_stdin_commands(void);
+
+#define REGRESS_PREPARE_ARGS                \
+    if (commands_from_stdin) {              \
+        argc = get_stdin_commands();        \
+        arg = 0;                            \
+        argv = stdin_argv;                  \
+    }
 
 zip_t *ziptool_open(const char *archive, int flags, zip_error_t *error, zip_uint64_t offset, zip_uint64_t len);
 
 
 #include "ziptool.c"
 
+int get_stdin_commands(void) {
+    int argc = 0;
+    char *p, *word;
+    fgets(stdin_line, sizeof(stdin_line), stdin);
+    p = stdin_line;
+    while ((word = strsep(&p, " \n")) != NULL) {
+        if (word[0] == '\0') {
+            continue;
+        }
+        stdin_argv[argc] = word;
+        argc++;
+        if (argc >= MAX_STDIN_ARGC) {
+            break;
+        }
+    }
+    return argc;
+}
 
 zip_source_t *memory_src = NULL;
 
diff --git a/src/ziptool.c b/src/ziptool.c
index e9b8da70c..281bfbbb7 100644
--- a/src/ziptool.c
+++ b/src/ziptool.c
@@ -1060,6 +1060,10 @@ main(int argc, char *argv[]) {
     }
     zip_error_fini(&error);
 
+#ifdef REGRESS_PREPARE_ARGS
+    REGRESS_PREPARE_ARGS
+#endif
+
     err = 0;
     while (arg < argc) {
         int ret;